Dimitrios Gravalos

Dimitrios Gravalos (born April 18, 1984, in Kalamaria) is a Greek sprinter, who specialized in the 400 metres. He won the gold medal for the 400 metres at the 2003 European Junior Championships in Tampere, Finland, with a time of 46.54 seconds.

Gravalos competed for the men's 4 × 400 m relay at the 2008 Summer Olympics in Beijing, along with his teammates Stylianos Dimotsios, Konstadinos Anastasiou, and Pantelis Melachroinoudis. He ran on the second leg of the second heat, with an individual-split time of 45.66 seconds. The team finished the relay in fifteenth place for a seasonal best time of 3:04.30, failing to advance into the final.